Marcus Rashford showed Jose Mourinho why he should be United's key striker in the win over LA Galaxy

And Mourinho was quick to heap praise on youngster Rashford after his deadly performance in front of goal.

The Portuguese boss believes Rashford has baulked up over the summer and is ready to fire United towards the title next campaign.

Speaking after the game he said: “It’s just the natural evolution of a kid.

"You change your body when you're a young kid.

"He's already taller than when I arrived 13 months ago - he's three centimetres taller - and he put on some muscle but without any kind of specific work because his speed is his most important quality.